68 lines
2.6 KiB
Bash
68 lines
2.6 KiB
Bash
# shellcheck shell=bash
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echo Sourcing setup-cuda-hook >&2
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extendCUDAToolkit_ROOT() {
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if [[ -f "$1/nix-support/include-in-cudatoolkit-root" ]] ; then
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addToSearchPathWithCustomDelimiter ";" CUDAToolkit_ROOT "$1"
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if [[ -d "$1/include" ]] ; then
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addToSearchPathWithCustomDelimiter ";" CUDAToolkit_INCLUDE_DIR "$1/include"
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fi
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fi
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}
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addEnvHooks "$targetOffset" extendCUDAToolkit_ROOT
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setupCUDAToolkitCompilers() {
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echo Executing setupCUDAToolkitCompilers >&2
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if [[ -n "${dontSetupCUDAToolkitCompilers-}" ]] ; then
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return
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fi
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# Point NVCC at a compatible compiler
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# For CMake-based projects:
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# https://cmake.org/cmake/help/latest/module/FindCUDA.html#input-variables
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# https://cmake.org/cmake/help/latest/envvar/CUDAHOSTCXX.html
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# https://cmake.org/cmake/help/latest/variable/CMAKE_CUDA_HOST_COMPILER.html
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export cmakeFlags+=" -DCUDA_HOST_COMPILER=@ccFullPath@"
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export cmakeFlags+=" -DCMAKE_CUDA_HOST_COMPILER=@ccFullPath@"
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# For non-CMake projects:
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# We prepend --compiler-bindir to nvcc flags.
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# Downstream packages can override these, because NVCC
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# uses the last --compiler-bindir it gets on the command line.
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# FIXME: this results in "incompatible redefinition" warnings.
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# https://docs.nvidia.com/cuda/cuda-compiler-driver-nvcc/index.html#compiler-bindir-directory-ccbin
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if [ -z "${CUDAHOSTCXX-}" ]; then
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export CUDAHOSTCXX="@ccFullPath@";
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fi
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export NVCC_PREPEND_FLAGS+=" --compiler-bindir=@ccRoot@/bin"
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# NOTE: We set -Xfatbin=-compress-all, which reduces the size of the compiled
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# binaries. If binaries grow over 2GB, they will fail to link. This is a problem for us, as
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# the default set of CUDA capabilities we build can regularly cause this to occur (for
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# example, with Magma).
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#
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# @SomeoneSerge: original comment was made by @ConnorBaker in .../cudatoolkit/common.nix
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if [[ -z "${dontCompressFatbin-}" ]]; then
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export NVCC_PREPEND_FLAGS+=" -Xfatbin=-compress-all"
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fi
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# CMake's enable_language(CUDA) runs a compiler test and it doesn't account for
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# CUDAToolkit_ROOT. We have to help it locate libcudart
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if [[ -z "${nvccDontPrependCudartFlags-}" ]] ; then
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export NVCC_APPEND_FLAGS+=" -L@cudartLib@/lib -L@cudartStatic@/lib -I@cudartInclude@/include"
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fi
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}
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setupCMakeCUDAToolkit_ROOT() {
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export cmakeFlags+=" -DCUDAToolkit_INCLUDE_DIR=$CUDAToolkit_INCLUDE_DIR -DCUDAToolkit_ROOT=$CUDAToolkit_ROOT"
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}
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postHooks+=(setupCUDAToolkitCompilers)
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preConfigureHooks+=(setupCMakeCUDAToolkit_ROOT)
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